<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <!-- 引入样式 -->
    <link rel="stylesheet" href="style.css">
</head>
<body>
    <div id="app">
        <!-- 数组中没有数据便不再展示 -->
        <div v-if='books.length > 0'> 
            <table border="1">
                <thead>
                    <tr>
                        <th></th>
                        <th>书籍名称</th>
                        <th>出版日期</th>
                        <th>价格</th>
                        <th>购买数量</th>
                        <th>操作</th>
                    </tr>
                </thead>
                <tbody>
                    <tr v-for="(item,index) in books">
                        <td>{{item.id}}</td>
                        <td>{{item.name}}</td>
                        <td>{{item.date}}</td>
                        <!-- 过滤器 -->
                        <td>{{item.price | showPrice}}</td> 
                        <td>
                            <button @click='decr(index)' :disabled='item.count <= 1'>-</button>
                            {{item.count}}
                            <button @click='incr(index)'>+</button>
                        </td>
                        <td>
                            <button @click="removeBook(item)">移除</button>
                        </td>
                    </tr>
                </tbody>
            </table>
            <h2>总价格: {{totalPrice | showPrice}}</h2>
        </div>
        <h2 v-else>购物车中没有内容!</h2>
    </div>
    <script src="../js/vue.js"></script>
    <script src="main.js"></script>
</body>
</html>